Helper for setting attestation IDs

Useful for testing on unprovisioned devices, so that IDs match those
expected by the VTS tests.

Note that any attestation involving the values set as attestation IDs
will only be signed by a fake key, and so will not be a valid
attestation of anything.

Bug: 258602662
Test: VtsAidlKeyMintTargetTest --gtest_filter="*NewKeyGenerationTest.EcdsaAttestationIdTags*default"
Change-Id: Ic31e4f28ec3a2830ae12a794b2fa063944df2614